Headshot of Grace Onuma, MD

Grace Onuma, MD

University Medicine Associates
Schedule an appointment: 210-358-5100
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Specialty

  • Family Medicine

Board Affiliation/Certification

  • American Board of Family Medicine

Education

  • Ross University School of Medicine - Florida (2014)

Residency

  • Family Medicine, University of Pittsburgh Medical Center (2018)

Languages

  • English

Gender

  • Female

Southwest

2121 SW. 36th Street
San Antonio,TX 78237

Insurance Accepted

  • 6 Degrees - Transplant
  • 90 Degree Benefits - Third Party Administrator
  • Aetna Better Health - CHIP/CHIP Perinate Newborn
  • Aetna Better Health - Medicaid STAR
  • Aetna Health - Commercial (Choice POS II, Elect Choice EPO, Exchange (Silver/Gold HMO))
  • Aetna Health - Commercial (HMO, Managed Choice POS, Meritain, Open Choice PPO)
  • Aetna Health - Commercial (QPOS, SAISD, Select)
  • Aetna Health - Medicaid Dual Preferred (HMO D-SNP)
  • Aetna Health - Medicare Advantage (Eagle PPO, Freedom PPO, Premier HMO, Prime HMO, Value Plus PPO)
  • Aetna Health - Transplant ONLY
  • Allegiance - Universal Benefits Consortium
  • Allwell (Superior HealthPlan) - Medicare Advantage
  • Ancira Enterprises - Direct Employer
  • Benefit Administrative Systems - Third Party Administrator
  • BlueCross BlueShield (Federal Programs) - Commercial (Federal - All Products)
  • BlueCross BlueShield (Out-of-State) - Commercial (Out of State - Blue Card Program Only)
  • BlueCross BlueShield of Texas - Commercial (Blue Premier HMO, Blue Choice PPO)
  • BlueCross BlueShield of Texas - Commercial (CHIP, Blue Advantage HMO, Blue Essentials HMO)
  • BlueCross BlueShield of Texas - Commercial (ERS, TRS, State of TX Employees)
  • BlueCross BlueShield of Texas - HPN/EPO (Narrow Network)
  • BlueCross BlueShield of Texas - Medicaid (STAR, STAR Kids, STAR PLUS)
  • BlueCross BlueShield of Texas - Medicare Advantage (HMO, PPO)
  • BlueCross BlueShield of Texas - Medicare-Medicaid Dual Eligible Plans
  • BlueCross BlueShield of Texas - Traditional/Par Network
  • BlueCross BlueShield of Texas - Transplant Network
  • Carelink Program
  • CHAMPVA - Governmental
  • Cigna - Employer Specific Network (United Benefits Consortium)
  • Cigna - Employer Specific Network (USAA Employees & Dependents Only)
  • Cigna Health Spring - Medicare Advantage (WellMed)
  • Community First Health Plans - CHIP/CHIP Perinate Newborn
  • Community First Health Plans - Commercial (HMO, Exchange)
  • Community First Health Plans - Medicaid (STAR, STAR Kids, STAR PLUS)
  • Community First Health Plans - Medicare Advantage (HMO)
  • Community First Health Plans - University Family Care Plan
  • Curative - Commercial (All Products)
  • Driscoll Health Plan - Medicaid (All products)
  • EBSO Benefits - Third Party Administrator
  • El Paso Health - CHIP
  • El Paso Health - Medicaid STAR
  • Employers Health Network - Commercial (PPO)
  • Entrust - Third Party Administrator
  • First Health - Commercial (All Products)
  • Gilsbar - Third Party Administrator
  • HealthSmart (Accel) - Commercial (All products)
  • Humana - Medicare Advantage (HMO, PPO, WellMed)
  • Humana - Transplant Network
  • Imagine 360 - Third Party Administrator
  • Imperial Health - Commercial (Exchange)
  • Imperial Health Plan - Medicare Advantage
  • Independent Medical Systems - Commercial (PPO)
  • Independent Medical Systems - Workers Compensation
  • Interlink - Transplant Network
  • LifeTrac - Transplant Network
  • Medicaid (Traditional) - Medicaid/Medicare
  • Molina Healthcare - CHIP/CHIP Perinate
  • Molina Healthcare - Commercial (Exchange)
  • Molina Healthcare - Medicaid (STAR, STAR Kids, STAR PLUS)
  • Molina Healthcare - Medicare Advantage
  • Molina Healthcare - Medicare-Medicaid Dual Eligible Plans
  • MultiPlan - Commercial (All products)
  • OptumHealth - Transplant Network
  • Point Comfort Underwriters - Refugee Medical Assistance (Adults, Children)
  • Private Healthcare Systems - Commercial (All Products)
  • ProCare Advantage - Medicare Advantage (Special Needs Plan)
  • Provider Partners Health Plan - Medicare Advantage (Special Needs Plan)
  • SCAN Health - Medicare Advantage (All Products)
  • Superior HealthPlan - CHIP/CHIP Perinate
  • Superior HealthPlan - Medicaid (STAR, STAR Health Foster Care, STAR Kids, STAR PLUS)
  • Superior HealthPlan - Medicare-Medicaid Dual Eligible Plans
  • Surest (United Healthcare) - Commercial (All Products)
  • Tokio Marine - Transplant Network
  • TriWest - TRICARE West Region
  • TriWest - VA Community Care Network
  • Trustmark Benefits (f/k/a CoreSource) - Third Party Administrator
  • UnitedHealthcare - Commercial (Charter EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Choice Plus POS/PPO/Choice Plus-HAS)
  • UnitedHealthcare - Commercial (Compass EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Core and Core Choice Plus EPO/HMO)
  • UnitedHealthcare - Commercial (Doctors Plan EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Heritage EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Indemnity)
  • UnitedHealthcare - Commercial (Navigate EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Nexus ACO/EPO/HMO/POS)
  • UnitedHealthcare - Commercial (PPO)
  • UnitedHealthcare - Commercial (Select EPO/HMO/POS)
  • UnitedHealthcare - Commercial (Select Plus EPO/HMO/POS)
  • UnitedHealthcare - Medicare Advantage (AARP Plans, Complete Care Plans, Erickson Advantage Plans)
  • UnitedHealthcare - Medicare Advantage (UnitedHealthcare Group Plans, WellMed)
  • UnitedHealthcare Community Plan - CHIP/CHIP Perinate
  • UnitedHealthcare Community Plan - Medicaid (STAR, STAR Kids, STAR PLUS)
  • UnitedHealthcare Community Plan - Medicare-Medicaid Dual Eligible Plans
  • Universal Benefits Consortium (Allegiance) - Direct Contract with TPA/Broker for select ISDs
  • University of Incarnate Word - Direct Contact with Employer
  • Velocity National Provider Network - Commercial (Multiple Payers)
  • Velocity National Provider Network - Commercial (PPO)
  • Veterans Administration - Governmental
  • WellCare - Medicare Advantage
  • WellCare by Allwell (Medicare Advantage - All Products)
  • WellCare by Superior HealthPlan - Dual Align (HMO D-SNP)
  • WellMed (Gonzaba Medical Group IPA) - Medicare Advantage (Transplant Only)
  • WellMed - Medicare Advantage (Cigna HealthSpring, Humana, United Healthcare, WellPoint)
  • WellPoint (Gonzaba) - Medicare Advantage (TRANSPLANTS ONLY)
  • WellPoint - CHIP/CHIP Perinate
  • WellPoint - Medicaid (STAR, STAR Kids, STAR PLUS)
  • WellPoint - Medicare Advantage (All Products)
  • WellPoint - Medicare Advantage (Transplant Only)
  • WellPoint - Medicare Advantage (WellMed)
  • WellPoint - Medicare-Medicaid Dual Eligible Plans
Please contact your health insurance company to confirm provider participation. For billing and insurance questions, please call our Billing Department at 210-358-3260.
“If you want to help someone, you must first find out where they are and start there.”
I am a primary care physician caring for adult patients, with clinical interests in preventive health, chronic medical conditions, as well as obesity and weight management.
Growing up in Nigeria, I witnessed firsthand the challenges faced by underserved communities with limited access to medical care. Those early experiences shaped my commitment to providing compassionate, equitable care and continue to guide my work in medicine today.
Philosophy of Care
I believe in partnering with patients to set attainable, personal health goals and empowering them to be active participants in their own care. By meeting patients where they are, I strive to build trust, encourage long-term wellness and support sustainable lifestyle changes.
Favorite Parts of Medicine
  • Building long-term relationships through continuity of care
  • Supporting patients across every stage of their health journey
Awards & Recognition
  • Bexar County Medical Society “Women in Medicine” Award, 2023
Hobbies
Outside of medicine, I enjoy interior design and décor, spending time with family and watching Korean dramas.
Call 210-358-5100 to request an appointment with this doctor.

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